xref: /freebsd/sys/contrib/device-tree/Bindings/mailbox/mtk,adsp-mbox.yaml (revision 3a3af6b2a160bea72509a9d5ef84e25906b0478a) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/mailbox/mtk,adsp-mbox.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Mediatek ADSP mailbox
8
9maintainers:
10  - Allen-KH Cheng <Allen-KH.Cheng@mediatek.com>
11
12description: |
13  The MTK ADSP mailbox Inter-Processor Communication (IPC) enables the SoC
14  to ommunicate with ADSP by passing messages through two mailbox channels.
15  The MTK ADSP mailbox IPC also provides the ability for one processor to
16  signal the other processor using interrupts.
17
18properties:
19  compatible:
20    items:
21      - const: mediatek,mt8195-adsp-mbox
22
23  "#mbox-cells":
24    const: 0
25
26  reg:
27    maxItems: 1
28
29  interrupts:
30    maxItems: 1
31
32required:
33  - compatible
34  - "#mbox-cells"
35  - reg
36  - interrupts
37
38additionalProperties: false
39
40examples:
41  - |
42    #include <dt-bindings/interrupt-controller/arm-gic.h>
43    #include <dt-bindings/interrupt-controller/irq.h>
44
45    adsp_mailbox0:mailbox@10816000 {
46        compatible = "mediatek,mt8195-adsp-mbox";
47        #mbox-cells = <0>;
48        reg = <0x10816000 0x1000>;
49        interrupts = <GIC_SPI 702 IRQ_TYPE_LEVEL_HIGH 0>;
50    };
51